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Re: What size tire for 15x8 Truck Ralleys
Keep in mind that tire height will effect your engine RPM's at highway speeds. If you're running a 3.73 or higher gear with a stock 350 or 400 transmission I would be mindful of how you most often drive your truck. Formula is MPH x Ratio x 336 / tire height = RPM. Already Gone's comments above list the height specs that most web site suggest but when I put a tape measure on the rally's I have with 275x60x15 the height is actually 27".
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